Die for shaping blanks for pulley-spokes.



No. 630,777. Patented Aug. 8, I899. T. COBSCADEN, Decd.

A. I. CURSGADEN, Administratrix. DIE FUR SHAPING BLANKS FOR PULLEYSPOKES.

' (Application filed Oct. 26, 1898.) 7 (No Mo em 2 Sheets-Sh0at FIG.

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S A ES-- .PA.TENT Enron.

ADELINE J. CORSOADEN, OF PHILADELPHIA, PENNSYLVANIA, ADMINIS- TRATRIX OFTHOMASO ORSOADEN, DECEASED.

DIE FOR SHAPING BLANKS FOR PULLEY-SPOKES.

SPECIFICATION forming part of Letters Patent No; 630,777, dated August8, 1899. Application filed October 26, 1898. Serial No. 694,599. (Nomodel.)

To all whom it may concern:

Be it known that THOMAS CORSCADEN, deceased, formerlyof the city andcounty of Philadelphia, State of Pennsylvania, did invent an Improvementin Dies for Shaping Blanks for Pulley-Spokes, of which the following isa specification.

This invention has reference to dies for shaping blanks forpulley-spokes; and it consists of certain improvements which arefullyset forth in the following specification and shownintheaccompanying drawings, which form a part thereof. v

The invention comprehends certain improvements in die structures adaptedto form or shape spoke-blanks suitable for pulleys of the charactershown in Patent No. 595,559, dated December 14, 1897. Insheet-metalpulleys of the form shown in said patent the spoke-arms aremade from a sheet-blank divided longitudinally to a point adjacent toone end and the several parts spread so as to radiate from a hub-center.

The improvements comprehend dies for severing portions of the blank,whereby it is brought to a condition which permits it to be.

subsequently shaped and formed. In carrying out the invention two diestructures are.

providednamely, an upper and lower which by coaction shall clamp theblank and properly shear and bend the same. die structure is providedwith two blades more or less parallel and with an interposedspringactuated floor, and also with stripper-bars, between which and theshearing-blades the blank to be treated is placed. 7 The said diestructure may further be provided with suit able guides forproperlyregistering the blank in position. The upper die structurecomprises a central shearing and forming die which operates inconjunction with the two shearing-blades of the lower diestructure andalso with the movable floor in the manner hereinafter described. Thisupper die struc-,

ture may, furthermore, be provided with two outer shearing-blades fortrimming the outer edges ofthe blank, though this latter feature may beomitted, if desired. The operation of these dies upon a blank is to trimthe blank into the requisite shape and at the same time to divide thesame by two substantially par- The lower allel slits almost the entirelength of the blank and simultaneously therewith depress the strip ortongue of the blank intermediate of the two slits, so that the blank issubdivided without the removal of any metal intermediate of the threestrips or arms so formed, which subsequently form the radiatingspokearms. In the subsequen'toperations of forming the spoke-arms thethree strips or arms are brought into the same plane and treated to theaction of the dies, which spread the arms and curve the hub portion, butwhich form no part of this invention. The improvements will be betterunderstood by reference to the accompanying drawings, in which Figure 1is an inverted. plan viewof the upper die structure. Fig. 2 is a planview of the lower die structure. Fig. 3 is a side elevation of the diescomplete. Fig. 4c is a crosssection of same on line m 00. Fig. 5 is aplan view of the blank after being treated. Fig.

on line y 1 ,and Fig. 7 is atransverse section through theblank on line2 z.

A is the main frame of the lower die structure and is provided with twolongitudinal ranged in the lower part of the main frameA and held inposition by a longitudinal plate K.

move with the floor, and also have nuts at the bottom for adjustment andto catch ,upon the under side of the frame or base A, as shown, to limitthe upward movement of the floor under the action of the springs. Themovl'able floor 0 acts in a measure as a-movable jaw for the lower diestructure inthe man nor to be hereinafter described. Arranged above eachof the shearing-dies B B are strip- Y per-blocks B B, saidstripper-blocks being 6 is a longitudinal section through the blank.

shearing-dies B B, bolted in position by trans partedv by means offlanges c and spring J, ar-

The bolts L have heads which cause them to too supported at each end inthe cross-blades F F, to which they are riveted at f. This enables theplate after being sheared to be readily stripped from the upper die, tobe now described.

His the main frame of the upper die structure and has secured to it thecentral shearing-die G, which is of less length than the dies B B and isadapted to operate in conneetion with their adjacent faces for thepurpose of shearing the blank '1 and the forming the intermediate arm ortongue T. It will also be observed that this die C coacts with themovable floor 0, so that in cutting the blank and depressing it the saidtongue or arm T is caused to lie parallel to the upper portion of theblank. This prevents what would otherwise be a considerable displacementof this part of said blank. It is to be understood that while the saiddie 0 shears the blank completely at one end its otherend is at aconsiderable distance from the opposite edge of the blank, so that thereis atransverse portion left uncut corresponding to the hub-section ofthe blank in the latter formation. This is clearly shown in Fig. 5. Theseverance between the tongue T and the main portion of the blank is suchthat there is no removal of metal between the tongue and its adjacentparts, but the latter is simply depressed to a slight extent to insure aclean cut and severance, and thereby obviate the weakness which wouldoccur adjacent to the hub by the removal of the metal. The end of thedie C adjacent to the hub end of the blank is somewhat rounded, so as toform a curved depression between the tongue and the blank, as indicatedin Fig. (5.

I I are two side shearing-blades which are also bolted to the upper mainframe II by transverse bolts 2', the said blades I operating inconjunction with the outer edges of the dies B B. The function of theseblades I I is to shear the outer lateral edges of the blank to properlytaper the arms formed thereon. \Vhile preferring said construction, itis not essential that said arms shall be tapered, for in smallpulleysthe tapering would hardly be perceptible on account of the short lengthof the arms, and in this case it is evident that the dies I I might beomitted, if so desired. They are advantageous however, in that theblanks do nothave to be so accurately made before being inserted in thedies, and in using the dies we are insured that the width of the severalarms will accuratelyconform to the requirements.

The upperdie structure is recessed between the dies 0 and I to formspaces in which the stripper-bars 13 are received, as is clearly shownin Fig. 4:. The stripper-bars should be placed a distance so fficientlyabove the uppersurface of the dies B so that when the movable fioor Oraises the blank the tongue T may be at an elevation suflicient toclearthe upper surface of the dies 13. Said blank maybe pushed laterallyout of the dies. This construction is illustrated in Fig. 4c.

The ends of the lower die structure are provided with plates F F, whichare notched, as shown in Fig. 2, to receive the upperdiestructure andmore or less guide the same. One of these plates F at one end of thedies is provided with a series of apertures f. Interposed between thestripper-bars B and the tops of the dies B is a guide-plate alsohavingaseries of apertures r, so located that a pin S thrust downthrough the aperturesfand the corresponding apertures of the plate Rwill adjust the said guide-plate longitudinally in position to makeproper widths of the uncut portion of the blank to correspond to theright width suitable for the hub portions. It will be observed thatthese holes j and r are arranged in pairs and are somewhat out ofalinement, some pairs being out of alinement to a greater extent thanothers, and from this it is seen that it is only necessary to shift theplate to the required degree by about one-eighth or one-fourth of aninch to bring another pair of holes fr into alinement, when the pin Smay be thrust through them and the adjustment of the guide R thussecured in place. To secure longer or shorterarms to the blank, it isonlynecessary to insert blanks of greater or less length and adjust themalways to the guide-plate R, in which case the requisite width of thehub portion will be secured and the ends of the arms will be accordingto the previously-prepared length of blank. This guide-plate R isadjustable and overlaps the outer cutting edges of the dies 13,longitudinally considered, while lying in substantial alinement withsaid cutting edges, but lies wholly to one end of the inner cuttingedges of the said dies B, which coact with the upper central die 0, soas to insure a portion of one end of the blank remaining unsplit. Itwill be further seen that the apertures 0' are out of transversealinement upon the guide R, while the apertures f in the plate Fcorrespond to those in the guide, longitudinally considered, but out oftransverse alinement with them, transversely considered, the saidapertures in the guide and plate being in the direction of the movementof the dies. The pin S may thus lock the guide R in various adjustmentsrelatively to the plate F and the dies proper. Attention is furthercalled to the fact that when the blades B and I are designed fortaperingthe arms and used with the portion of the dies which corresponds to thehub part of the blank-namely, that portion to the right of the die 0 inFigs. 1 and they are so shaped as not to taper the blank at the parts i1 Fig. 5, since these parts when curved into a semicylinder must beparallel and form the division-line of the hub. The shapes of the dies13 I for this purpose are clearly shown in Figs. 1 and 21 To facilitatethe moving of the blank T against the guide-plate R, a slide \V,arranged atthe other end of the dies, may be employed, and this is madewith two arms w, which move between the parts B B, so as to be out ofthe line of movement of the die 0.

While the construction shown is preferred, the invention is not confinedto the minor details illustrated, as they may be modified in variousways without departing from the spirit of the invention.

Having now described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is

1. The combination of two frames relatively movable to and from eachother, two longitudinally-arranged shearing-dies, an interposed movablefloor carried upon one of said frames, and an upper shearing-die carriedby the other frame adapted to operate in conjunction with the adjacentedges of the two longitudinal dies and also operate upon the metal blankimmediately above the movable floor.

2. The combination of two frames relatively movable to and from eachother, two longitudinally-arranged shearing-dies, an interposed movablefioor carried upon one of said frames, and an upper shearing-die carriedby the other frame adapted to operate in conjunction with the adjacentedges of the two longitudinal dies and also upon the metal blankimmediately above the movable floor, and two strippers secured inposition above the longitudinal dies and with an intervening spacethrough which the upper shearing-die may operate.

3. The combination of two frames relatively movable to and from eachother, two longitudinally-arranged shearing-dies, an interposed movablefloor carried upon one of said frames, an upper shearing-die carried bythe other frame adapted to operate in conjunction with the adjacentedges of the two longitudinal dies and also upon the metal blankimmediately above the movable floor, two strippers secured in positionabove thelongitudinal dies and with an intervening space through whichthe upper shearing-die may operate, and an adjustable guide arrangedabove the longitudinal dies and to one end thereof beyond the uppershearing-die.

4:. The combination of two frames relatively movable to and from eachother, two longitudinally-arranged shearing-dies, an interposed movablefloor comprising a verticallymovable block, springs to elevate the saidblock and bolts to limit the upward movement thereof carried upon one ofsaid frames, and an upper shearing-die carried by the other frameadapted to operate in conjunction with the adjacent edges of the twolongitudinal dies and also upon the metal blank immediately above themovable floor.

5. The combination of two frames relatively movable to and from eachother, two longitudinally-arranged shearing-dies, an interposed movablefloor carried upon one of said frames, an upper shearing-die carried bythe other frame adapted to operate in conjunction with the adjacentedges of the two longitudinal dies that operate upon the metal blankimmediately above the movable floor, and two outer upper longitudinalshearingdies adapted to operate in connection with the outer edges ofthe longitudinal dies first mentioned.

6. In dies for shearing spoke-blanks, the combination of twolongitudinal dies B, B; having their outer edges slightly taperingrelatively to each other for a portion of their length and in which theadjacent edges of the said two dies are also tapering, upper dies 0, I,I, adapted to operate in conjunction with the longitudinal dies B, B,and in which the intermediate die 0 is tapering in its length to conformto the spaces between the longitudinal dies B, B, and in which the innercutting edges of the dies I, I, are arranged at angles relatively toeach other to conform to the outer cutting edges of the dies B,-B.

7. In dies for shearing spoke-blanks, the combination of twolongitudinal dies B, B, having their lateral edges slightly taperingrelatively to each other fora portion of their length and in which theadjacent edges of the said two dies are also tapering, upper dies 0, I,I, adapted to operate in conjunction with the longitudinal dies B, B,and in which the intermediate die 0 is tapering in its length to conformto the spaces between the longitudinal dies B, B, and in which the innercutting edges of the dies I, I, are arranged at angles relatively toeach other to conform to the outer cutting edges of the dies B, B,longitudinal stripper-bars B, B, arranged above the dies B, B, and aspring-actuated floor 0 interposed between said dies B, B, and below thedie 0.

8. The combihation of dies having longitudinal cutting edges foroperating upon sheetmetal blanks, with a guide to register the blankbetween the dies arranged to one side of but overlapping the cuttingedges of the dies longitudinally considered and consisting of a platelying in alinement with the said cutting edges of the dies and havingaseries of apertures out of transverse alinement, a corresponding platefixed relatively to one of the dies having apertures corresponding tothose of the guide longitudinally considered but out of transversealinement with the apertures in the guide transversely considered thesaid apertures in said guide and plate being in the direction ofmovement of the dies, guides for the guide-plate to guide it upon thedies, and a removable pin adapted to be inserted through the aperturesof the fixed plate and the guideplate for adj usting the latter indifferent relative positions on the dies.

9. The combination of dies having longitudinal cutting edges foroperating upon sheetmetal blanks, with a guide to register the blankbetween the dies arranged to one end of the cutting edges of the dieslongitudinally considered and consisting of a plate lying in alinenientwith the said cutting edges of the apertures of the fixed plate and theguidedies and having a series of apertures out of plate for adjustingthelatter in different relatransverse alinernent, a corresponding platefixed relatively to one of the dies having apertures corresponding tothose of the guide longitudinally considered but out of transversealinement with the apertures in the guide transversely considered thesaid apertures in said guide and plate being in the direction ofmovement of the dies, guides for the guideplate to guide it upon thedies and a removable pin adapted to be inserted through the tivepositions on the dies.

In testimony of which invention I have hereunto set my hand.

ADELINE J. COR SCADEN, Adm'inistrairim of'the estate of ThomasCorscaden, deceased.

\Vitnesses:

Juan J'. CROWLEY, S. \VARREN IIALL.

